Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
PlayPlay.io - Chess and Ping Pong tracking in Slack
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Pinpon - The ping pong bot for Slack
Better Uptime - We call you when your website goes down
Ranked.Fun - An online leaderboard with your friends for your favorite games (Ping Pong, Foosball, Smash Ultimate, Chess, etc.)